Journal box impact head and dust guard structure



May 5, 1953 'r. w POTTER JOURNAL Box'mPAcT HEAD AND DUST GUARD STRUCTURE' Filed Sept. 2,1950

2 .SHEETS-SHEET 1 INVEN TOR, THOMAS W POTTER, W4. W

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May 5, 1953 T. w. POTTER 2,637,604

JOURNAL'BOX IMPACT HEAD AND DUST GUARD STRUCTURE Filed Sept; 2, 1950 2 SHEETS-SHEET 2 /IG-. 6. IIvvErv'roR,

THOMAS M POTTER,

Patented May 5, 1953 JOURNAL BOX IMPACT HEAD AND DUST GUARD STRUCTURE Thomas W. Potter, Mattoon, IlL, assignor to Journal Box Servicing Corporation, Indianapolis, Ind., a corporation of Indiana Application September 2, 1950,-Serial No. 182,914

3 Claims.

This invention relates to the art of journal boxes such as are employed in the rolling stock of railways, namely in freight cars, passenger cars, locomotives, and the like. A primary purpose of the invention is to provide a structure which will prevent the rocking and lifting of the hearings on the journals particularly due to sudden application of brakes against the wheels, particularly from the one-sided brakes, commonly employed.

The invention relates to that type of a journal box which is waste-packed. In the presence of waste, it is necessary that the bearing remain in contact at all times with the top side of the journal in order to prevent waste grabs which normally result in heated bearings.

A further primary object of the invention is to provide a structure which is applicable to the present constructions now in. operation so that none of the present side frames of the car trucks need to be discarded, since the combination embodying my invention may be applied directly thereto.

A still further important object of the invention is to provide as light a weight of a dust guard as may be possibly used in order to prevent undue wear of that guard where it rests on the journal.

The invention comprises primarily the use of a pair of impact heads, one on each diametrical horizontal side of the axle to have these impact heads fixed in position, to extend within the dust guard receiving grooves and be permanently attached to the journal box in any such means such as by welding; and then to use a thinner than normal dust guard between the impact heads and the opposing rib defining the normal groove into which the dust guard is inserted.

By use of that primary structure, all of the heretofore complications of trying to incorporate removable impact heads in the dust guard itself, or in supplying separate impact heads around which the dust guard has to be formed and carried, is avoided. At the same time a very effective, durable, and low cost structure is provided to eliminate the difficulties heretofore encountered.

One particular form of the invention is illustrated in accompanying drawings, in which Fig. 1 is a view in outside end elevation of a journal box to which the invention is applied;

Fig. 2 is a view in vertical longitudinal section through the journal box;

Fig. 3 is a vertical transverse section through the journal on the line'33 in Fig. 2;

Fig. 4 is a view in detail in vertical central longitudinal section through the rear portion of the journal box; 1

Fig. 5 is a detail in section on the line 5--5 in F g. 4;

Fig. 6 is a view in rear perspective of an impact head; and

Fig. 7 is a view in perspective of a dust guard.

The journal box structure herein illustrated in Figs. 1-3 represents the usual and well known construction. In this structure, the journal box Ill is an integral part of the side frame H, and has an opening l2 through its back end to receive therethrough the journal it so that the journal [3 may extend within the box It) suf ficiently to receive the usual bearing M thereon. behind the end collar and the rear shoulder Hi. The box In is provided in the usual manner with the outside cover l1.

The opening I 2 is normally circular in contour and is of considerably larger diameter than that of the shoulder It in order to permit the box In to be jacked up for inspection or replacement of the bearing [4 as the case may be. Just within the opening [2, there is provided a generally U-shaped groove l9 entering from the top side of the box In and extendingdown around the outer wall thereof to terminate across the floor in a generally semi-circular man- This groove I 9 is defined by the front and rear ribs and 2|, the rib 2! having the circular opening 12 therethrough. The rib 20 has a somewhat larger opening 22 therethrough.

A pair of impact heads 24 and 25, each identical in size and shape, are formed to have an impact face 26 of a planar nature. From this face 26, the head in each instance extends by a body portion 2! which is formed to fit within the groove I9, along a side thereof horizontally disposed from the center of the journal It. The width of the face 26 is made to be greater than the width of this body 21 so that there is provided a shoulder portion 28 which laps over and bears against the rib 2! through the hole 12.

The width of the body portion 2'! is made to be less than the width or" the groove I9. For example where the groove is 7 of an inch wide, the width of the body 2? will be approximately of an inch. This will leave A; of an inch clear between the side of the body 21 and the side of the rib 26 within the groove it. As indicated in Fig. 4, the face 26 will have its one edge in alignment with the outer face of the rib 2i, and its inner edge spaced from the rib it the distance indicated.

The vertical height of the face 26 is not critical, but it must be made to be sufficiently great to receive the impact of the shoulder 56 when it is thrown sidewise within the box it against that head when the application of brakes tend to throw the axle accordingly. What has been described in reference to the impact head Misto be applied to the mounting of the impact head on the opposite side of the box. In both cases, the impact heads 24 and 25 are welded into position as indicated, and as shown in the drawings so that theseximpact; heads become. in; reality'a: fixed, integral part of the journal'bo x I01 By reason of the width of the body Zl, and

also of the presence of the shoulder 28, the face 26 throughout its full area has; at solidg'backirrg, first against the bottom of the groove Miami secondly through the shoulder 28. against the edge of the rib 2 I. The impacthea'd's Handili are thus held and aligned in the box [Gite-have the shoulder l6 strike there against as the case may arise. The exact configurationof the upper" and lower ends of the body 2! is immaterial, since there is nothing to, interfere with'the extension of those ends if desired. I

Thus it is to be seen that theimpact heads 24 and may be attached to the journal-bozo lll already'in-use, simply by removing the side frame H and; applying the heads as indicated. When the side frame H is returned to its truck, a dust guard generally designated by the numeral is dropped down into the groove H! from the uppenside or the box itin the usual 951111 well known 'manner; Thisdust' guard 30-hasa central circular hole 3! therethrou' h slidinglyfitting around' theshoulder It when'the journal |=3-is inserted through that hole and on into the" box lift The dust guard 30 rides on the shoulder Hi sothat it is desirable to keep the wei ht of that guard to aminimum toprevent excesswear which would otherwise cause the hole 3 w wear um wardly-into an elliptical shape; In view-of" the fact that the bodies 27 occupy" portions of the groove [-9 on side of the shoulder l-Bf, it is necessary, as aboveindibated, to employ a thinner guard flllithan' is normally played}. This means of course that the guard weight is reduced from thenormal'* wei ht; This guard 30: may be made out'cf' wood, plywood; or" bul-ltjup in the usual and well known manner out of fabric. The guard 30- is free to move up and" down in the groove l9 alongside of" the bodies 2-? of the respective impact heads 2d and 25;

Thus it' is to be seen' that there are fixed im- 4 pactheads, one on each side of the axle; independent of any movement with the dust guard itself, andat' the sametime; the dust guard can" function in the usual and well; known manner riding-within the groove t9" to keep in close running fitabout the axle,- and still have its marginaled e overlappedwithin the dust errtr'apping groove. v

The parallel faces 28 define a vertical runway, inwhich the axle shoulder 16- may'travel' to have the shoulder be in closeproximity to those faces at' all times; This spacin'r' apart" of the faces 26' is normally substantially one thirty:- second-ofan inch greater than the diameter of the" shoulder [6.

While I have herein shown and described my invention in the one particular form, it is obvious that structural variations may be employed; such forexample as .reversi'n'r' the positions of the impact heads 24 and 25 to have them against the inner rib instead of the outer rib to have the dust guard ridea ainst the outer rib 21, and I 'therefore do-notdesire-tabs limited to that precise form beyondthe limitations which may be imposed. by the following claims".

mam:

1. The combinationv with an axle having a .i'ourlna'lta journal boxhaving a journal opening therein, through which said journal anda part ofsaid axle back of the journal extends, a dust guard openmg'inthe box'above the-iolunaliopenmg, and spaced ribs extending from the guard opening around said journal opening to define a dust guard retaining groove between the ribs, of a pair ofiinmact. heads: fixed to the journal box, one head omeaelr side of the axle; each of said heads having a fiat face directed toward the axle, a body extending from. the face into abutment with said box; andv aunitary dust guard having a hole therethrough, a margin of which hole freely fits amnndial portion of said axle to extend both below andabovetherefrom; and the outer edge portions of the guard entering said groove, to travel with said, axle. independently of said heads and float within the groove; said heads being carried by said box to-be in the; path of said axle part:

2'; The combination with" an axle-having-a journal', a journal box h-avi'nga journal opening, thereimthrough: which saidjournal and a part of said axle back of the journal extends, a: dust opening in them): above thejournal opening, and spaced ribs extending from the guard openingaround' said journal opening to define a dust guard retaining groove between the ribs, of a pair of impact heads fixed to-the journal box, onehead on" each sideof the axle; eachof said heads-havinga flat" face directed toward the axle, a body extending from the face-into abutment with said box; and-a-dlrstguard having a holetherethrough; the marginof which'holefreely fits around a portiorr ofsaid axle; and the-outer edge portions of the dust guard" entering said groove, totravel with said axleindependently of saidheads and 1 float within the groove"; said head bodies being axle bacl r of the journal extends, a dust guard opening in the box above the journal opening, and spaced ribsextending from the guard openingr around; saidi journal opening to define a dust guard'fretaining: groove between the ribs, of a pair oflimpactrheads fixed to the journal box, one head omeach side of. the axle; each ofsai'd heads havingta flati face directed toward the axle, a body exinmtling'from the face into abutment with said box; andla dustguard havinga hole therethrough, thezmargini of. whiel'n hole freely fits around a. portion of said axle; and. theiouteredge portions of theiguard entering said gronve', t'oitravelawith said axle independently of. said hea ds and: no at within the grooves: said. head bodies being: shaped to em ten saidigrcove and rest:againsathebottom; thereof; and bodies having: widths less: than that of the groove to provide clearance: for travel ofthe dust guard past the,- bodies: within: the: groove; and a: shoulder overhanging fromxsaid body undentheface: in each of? said heads. resting over and on cneof said ribs; said headabeing carried by! said box torbe, in the path of. said axlepart.

THOMAS: POTTER;

References Cited. in the file; ofv this patent 

